In message <[email protected]>, dated Sat,
9 Mar 2013, T. Sato <[email protected]> writes:
For example, a Class II power supply unit may be intended to be used
with small PC peripherals which itself doesn't have connections to
earth and the manufacturer may assume that the unit have no connection
to earth. But in real application, maybe the peripheral be connected to
a Class I desktop PC, and in that situation, the 0V output terminal of
the power supply unit may be actually connected to the earth.
This is a **safety issue**, not an EMC issue.
--
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